<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div id="app">
        <h2 :title="msg">鼠标放我身上看看</h2>
    </div>
    <script src="../assets/vue3.js"></script>
    <script>
        const app=Vue.createApp({
            data() {
                return {
                    msg: '我是一个属性值'
                }
            },
        })
        app.mount('#app')
    </script>
</body>
</html>